You will have to call Browning.
Impossible to answer. Could be 100-25000 USD
Impossible to value with only a serial number.
1975
Rifle or pistol?
Made in 1970, what is your question?
1971
Try the bbl and frame
Browning did not make the Model 70, Winchester did. Also, the serial number is not a valid Browning serial number for a 7mm Magnum rifle. Please doublecheck your information.
50-600 usd
50-1000 usd
The model is called the "BAR" which stands for Browning Automatic Rifle. This gun was made in 1971
1914-1955. Browning does not have sn's available.